Road-grader



(NoMod'elJ I A. V. PITTS.

I ROAD GRADER. No. 342,808. Patented-June 1,1886.

j zyrey ivr N. PETERS, Pholo'lilhngl-nphar. Washington. D. Q

UNITED STATES.

PATENT OFFICE.

AURELIUS V. PITTS, OF MARSEILLES, ILLINOIS.

ROAD-GRADER.

SPECIFICATION forming part of Letters Patent No. 342,808, dated June1,1886.

Application filrd August 23, 1885. Serial No. 175,281.

To all whom it may concern:

Be it known that I, AURELIUS V. PITTS, a citizen of the United States ofAmerica, residing at Marseilles, in the county of La Salle and State of.Illinois, have invented certain new and useful Improvements inRoad-Graders, of which the following is a specification, reference beinghad therein to the accompanying drawings.

This invention relates to certain improvements in road-grading machines,which improvements are fully set forth and explained in the followingspecification and claims.

Referring to the drawings, Figure 1 is a side elevation of the grader.Fig. 2 is a top plan View of the same. Fig. 8 is a side view of thegrader-frame and a cross-section of the scraperboard. Fig. 4 is aperspective view of the housing forming a guide for the rear part of thegrader-tongue. Fig. 5 is a plan view of the crank and lever for raisingthe front end of the scraper-board. Fig. 6 is a detail view of the wormandwvorm-wheel mechanism for rotating the crank-axles of the grader; andFig. 7 is a rear elevation of the housing forming aguide for the rearpart of the tongue, showing the manner of its attachment to the sillsand beams and the manner in which it vertically guides the rear end ofthe tongue.

R and R represent the sills of the grader, connected at their rear endsby means of the seat-board K, and secured at their front ends to therear side of the scraper-board M by means of angle-plates, as shown at Ein Fig. 3, and having the crank-axles a and a. boxed to their underside, upon the cranked ends a" of which the traveling wheels \V and Ware placed, as shown in Figs. 1 and 2, and upon which wheels said sillsand the rear part of the machine are supported.

D and D are a pair of parallel beams, supported immediately above sillsR Rou standards, such as are shown at S S S of Figs. 1 and 3. B is thetongue of the grader, located centrally between and parallel with saidbeams, and pivotally connected thereto, as shown at c in Fig. 1. Thefront end of said tongue terminates in the downwardlycurved eyeplate B,for pivotally connecting it to the twowheeled forward supporting-truck,A, having wheels of small enough diameter to turn under said tongue topermit the grader to be turned vertically.

(No model.)

in a short space. H is a housing arranged v erticall y between thesaidsills and said beams, and secured thereto by means of proper bolts, andforms a guide for the rear part of said tongue as it is movedvertically, as shown in Fig. 7. .V is a screw arranged in the upper partof said housing, so as to engage with the upper side of said tongue,bear down on the rear end of said tongue, and thereby hold thescraper-board M down to its work when the machine is used in soilrequiring such downward pressure of the scraper-board. In ordinary workthe weight of the machine is sufficient to hold the scraper board downto its work.

M is a shaft arranged across the machine under the tongue B, and boxedto the under sides of beams D D. Upon said shaft is socured a pair ofdisks, or m, one arranged 011 either side of the said tongue. Thesedisks have a friction-roller, m'flsecured between them near theirperipheries by means of a bolt passing through, as shown in Fig. 5,which frictionroller engages with the under side of said tongue. end ofsaid shaft, and arranged to engage with the toothed notched segment msecured to the upper side of beam D. By moving lever L backward, theshaft of and disks m will be partially rotated, so as to cause roller orto engage with the under side of said tongue to raise it, and therebyadj ust the scraper-board The said lever may be held in any desiredposition by meansof the notched segment m. The crank-axles a a are eachprovided with a worm-wheel, such as is shown at P, Fig. 6, located atthe inner side of the sills, and arranged to engage with and be rotatedby means of the worms 1?, secured on the lower ends of the verticalshafts Z, as shown in Fig. 6, boxed at F to the sills, as shown in saidfigure, and also to the beams, as shown in Fig. 1, by means of whichworm and worm-wheel mechanism the said axles may be partially rotated toelevate and lower the rear end of the machine.

Referring to Fig. 2, Z and Z represent the upper end of the verticalshafts of the worm and worm-wheel mechanism, respectively provided withthe hand-wheels Z and Z*, for rotating them.

T is a driver s seat, arranged to be supported Lis a handlever securedto one outer on the spring-standard T, standing on seatboard K. Thisseat is arranged immediately in the rear of said hand-wheels and lever,so they are accessible to the operator without leaving it. The travelingwheels W and W have sharpened peripheries to prevent their slidingsidewise on the ground.

G and G are. curved beams for connecting the outer ends of thescraper-board M to the beams D D, as shown in Figs. 1 and 2.

d and d are braces to brace the outer ends of the scraper-board againstthe sills R It. If desired, the'tongue B may be hinged at its rear endto the rear ends of the sills R R, as shown in Fig. 3.

The scraper-board M is set diagonally across the under side of themachine, as shown in Figs. 1 and 2, so as to carry the earth to one sideand throw it up toward the center of a road, and the machine is operatedby means of a team or other power attached to the forward truck, A.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is as follows, to wit:

1. In the grading'machine shown and described, as a means for verticallyadj usting the scraper-board and the rear part of the machine, thecombination of the beams D D, tongue 13, and sills R R with the lever L,cranked friction-roller m, hand-shafts Z Z", each having a worm, P,crank-axlesa and a, each having a worm-wheel, P, arranged to engageworms P, and wheels \V \V, each having sharpened peripheries,substantially as set forth.

2. In the grading-machine shown and described, the eombination of thebeams I) D, tongue B, pivotally' secured between said beams, lever L ofshaft in", arranged to give vertical movement tofriction-rollerm,notched segment m housing H, sills R R, havingstandards to support beams D D, and having angle-plates E, forconnecting them with the scraper -board, scraper-board M, curved beams GG, for connecting the outer ends of said scraper-board with the frame,and the means, substantially as shown and described, for givingindependent vertical adjustment to the rear end of the machine,substantially as set forth.

3. In the grading-machine shown and described, the worm and worm-wheelmechanism shown and described,for independently adjusting the sides ofthe machine, in combination with the lever and crank mechanism, as setforth, and tongue B, for vertically adjusting the scraper-board M,substantially as specified.

4. In the grading-machine shown and described, the housing H, centrallylocated and vertically arranged between the beams D D and sills R R, andsecured thereto as a guide for the rear part of the tongue B, and havingthe screw V, for holding down the tongue B to hold the scraper boarddown to its work, substantially as set forth.

5. In the grading-machine shown and described, the frame consisting'ofthe combination of the beams D l), arranged to pivotally support andvertically guide tongue B, sills R R, having standards for supportingsaid beams, and angle-plates for connecting them with the scraper-boardM. seat-board K, arranged to support a drivers seat and connect the rearends of said .sills, and the curved beams G G, for supporting the outerends of the scraper-board, as and for the purpose set forth.

AURELIUS V. PITTS.

Witnesses:

ALEXANDER BRUos, GEO. D. CHAPPLE.

